Presentation of Powerhouse by Bjørn Holm, Entra


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Presentation at the conference "CSR - a driver for innovation and competitiveness in the Nordic region" October 11 2012 in Trondheim.

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  • The pointofdeparture is thattoday,cars, boats, trains and airplanesaccount for approx 25% oftheworld’senergyconsumption
  • we want to get out of what popularily is called the 40% sector, the property sector is responsible for 40% of the energy consumption.In 2050 energyconsumption in buildingswill be equal to the total energyusage in theworldtoday – ifwedon’t do anythingThis is for sure not sustainable.
  • The Alliance consistsof: Skanska, Snøhetta, Hydro, ZERO and Entra Eiendom. Partners across the value chain of the sector. An agreementoncooperationwassigned April last year. As members of the Powerhouse alliance, we believe that energy-positive buildings are the buildings of the future
  • We want to demonstrate that it is possible to build energy-positive buildings not only in warm climates, but also in colder climates such as that in Norway. This includes both new constructions and rehabilitation. Together, wewant to develop and realizeofficebuildings as energy positivebuildings. The Powerhouse projects must be commersially profitable
  • Optimum Form Ball is the most energyefficient
  • Optimum orientationSun and daytimelight
  • Energy need is caluculated to extremelylow 21 kwh/m2 per annum
  • Calculated energy production from roof and parts of the facades is 49 kwh/m2/yearIt means that we have an energy surplus of 28Built-in energy in the construction is about 20 and that means we still go in plus based on the original definition
  • Presentation of Powerhouse by Bjørn Holm, Entra

    1. 1. Illustrasjon: SNØHETTA / MIR
    2. 2. 25%Cars, boats, trains andairplanes account forapprox 25% of the world’senergy consumption
    3. 3. 40%Today, buildings accountfor 40% of the world’senergy consumption 100%In 2050 energy consumptionin buildings will be equal tothe total energy usage in theworld today – if we don’t doanything
    4. 4. The founders: ZERO, environmental organization Skanska, developers Entra, property developers Snøhetta, architects Hydro, aluminium company
    5. 5. Powerhouse is a collaborative alliance on energy-positive buildingsWe want to change how we cooperate in the building industryAll key competence in a project should be available from the beginning
    6. 6. An energy-positive building is a building which during its operational phase generates more energy than what was used for the production of building materials, its construction, operation and disposalIllustrasjon: SNØHETTA / MIR
    7. 7. Form follows environment A result of cross-functional cooperation through the entire value chainIllustrasjon: SNØHETTA / MIR
    8. 8. Trondheim, Norway • Climatic challenging due to energy consumption used for heating • Climatic challenging due to solar energy production • Lots of wind... • Broad access to sea water
    9. 9. Pri 1: Collaborating with the best in each fieldPri 2: Maximum reduction of energy demandPri 2: Produce energy on sitePri 4: Motivated tenantry
    10. 10. • Energy-efficient volume• Superisolated building structure• Demand control on all technical facilities• Hybrid ventilation with low energy consumption to fans• Good daylight ratio = minimize energy for lighting• Heat pump for energy efficient heating of the building
    11. 11. Leveraging form
    12. 12. Leveraging solar energy
    13. 13. Leveraging space (area)
    14. 14. Energy required 21 kWh/m2 annuallyIllustration : SNØHETTA / MIR
    15. 15. Energy production 49 kWh/m2 annuallyUtnyttelse av volum
    16. 16. Illustrasjon: SNØHETTA / MIR